SB2022112804 - Multiple vulnerabilities in Nextcloud user_oidc

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Main Vulnerability Database SB2022112804

SB2022112804 - Multiple vulnerabilities in Nextcloud user_oidc

Published: November 28, 2022

Security Bulletin ID SB2022112804
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Stored cross-site scripting (CVE-ID: CVE-2022-39338)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the Authorization Endpoint. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


2) Cleartext transmission of sensitive information (CVE-ID: CVE-2022-39339)

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to software uses insecure communication channel to transmit sensitive information. A remote administrator can gain access to sensitive data.


Remediation

Install update from vendor's website.

References